206707603988 has 6 divisors (see below), whose sum is σ = 361738306986. Its totient is φ = 103353801992.

The previous prime is 206707603987. The next prime is 206707604027. The reversal of 206707603988 is 889306707602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 198329496964 + 8378107024 = 445342^2 + 91532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206707603981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25838450495 + ... + 25838450502.

It is an arithmetic number, because the mean of its divisors is an integer number (60289717831).

Almost surely, 2^206707603988 is an apocalyptic number.

It is an amenable number.

206707603988 is a deficient number, since it is larger than the sum of its proper divisors (155030702998).

206707603988 is a wasteful number, since it uses less digits than its factorization.

206707603988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51676901001 (or 51676900999 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 206707603988 in words is "two hundred six billion, seven hundred seven million, six hundred three thousand, nine hundred eighty-eight".